KOSO Honda Grom 4 Valve Cylinder Head Kit

Description

Details

KOSO Honda Grom MSX125 4 Valve Cylinder Head Kit with larger square intake and oversize exhaust port to accommodate the pair of 24mm intake and 21mm exhaust valves. The Koso Grom 4 Valve Cylinder Head Kit is designed to be added to an existing Koso Grom 61mm Big Bore Cylinder Kit. This 4 Valve Head will only work with KOSO 61mm Grom Big Bore Kit.